1220486 has 4 divisors (see below), whose sum is σ = 1830732. Its totient is φ = 610242.

The previous prime is 1220437. The next prime is 1220489. The reversal of 1220486 is 6840221.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305120 + ... + 305123.

It is an arithmetic number, because the mean of its divisors is an integer number (457683).

2^1220486 is an apocalyptic number.

1220486 is a deficient number, since it is larger than the sum of its proper divisors (610246).

1220486 is an equidigital number, since it uses as much as digits as its factorization.

1220486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610245.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 1220486 is about 1104.7560816760. The cubic root of 1220486 is about 106.8671598047.

The spelling of 1220486 in words is "one million, two hundred twenty thousand, four hundred eighty-six".